Shift functions circuits



1958 H. L. THOLSTRUP ETAL 2,859,851

sum FUNCTION S CIRCUITS 22. Sheets-Sheet 1 Filed April so. 1956 Em Em zogo Q om QQEWE 509E INVENTORS HENRY L. THOLSTRUP y v JOHN AASKINNER I ATT RNEY awe/mm Nov. 11, 1958 j H. L. THOLSTRUP ETA]: 2,859,851

SHIFT FUNCTIONS cmcuns INVENTORS HENRY L THOLSTRUP JO A, SKINNER ATTO Y Nov. 11, 1958 H. L. THOLSTRUP ETAL v ,8

SHIFT FUNCTIONS CIRCUITS Filed April 30, 1956 22 Sheets-Sheet 5 INVENTORS HENRY L. THOLSTRUP I It" I l I f I SKINNER BY CARRIAGE 2 2 RETURN ATTOR Y H..L. THOLSTRUP ETAL SHIFT FUNCTIONS CIRCUITS Nov. 11, 1958 22 Sheets-Sheet 4 Filed April 30, 1956 Nov. 11, 1958 H. L. THOLSTRUP Em 2,859,851

I SHIFT FUNCTIONS CIRCUITS Filed April 30, 1956 22 Sheets-Sheet 5 L IO INVENTORS HENRY L. THOLSTRUF BY OHN Av SKINNER A ORNEY Nov. 11, 1958 H. L. THOLSTRUP ETAL SHIFT FUNCTIONS CIRCUITS 22 Sheets-Sheet 6 272 FIG. H

Filed April 30, 1956 FIGJZ muim (DU) G\H\I\J\K\\YOPQRSTUVWXYZ 2 3456789 (813W H lli'illllll 000 0000000 00 O0 0 0 00 000 000 000 Q 09 0 0 o 00 0 0 00 O 0 000 0 o oo FIG. i4

3nnentors HENRY- L. THOLSTRUP JOHN A. SKINNER (Ittomeg Nov. 11, .1958 H. L. THOLSTRUP ETAL 2,359,851

SHIFT FUNCTIONS CIRCUITS 22 Sheets-Sheet 7 Filed April 30, 1956 m OE INVENTORS HENRY L. THOLSTRUP JOHN A. SKINNER 'TORNEY Nov. 11, 1958 H.'L. THOLSTRUPEIAL 2,859,851

SHIFT FUNCTIONS cmc rrs Filed April so, 1956 FIG.15

Nov. 11, 1958 H. L. THOLSTRUP EI'AL 2,859,851

SHIFT FUNCTIONS CIRCUITS 22 Sheets-Sheet 9 Filed April 30. 1956 FIG.16

INVENTORS HENRY L. THOLSTRUP JOHN A. SKINNER ATT NEY 1958 H. L. IV'HOLSTRUP EIAL 2,859,351

SHIFT FUNCTIONS CIRCUITS Filed April 30, 1956 22 Sheets-Sheet 10 giiw m m W W @@@@@@m@@@@ @m m@w M@@@@@m W GROUP SPACE C. R. TO SPACE EXP. S P

20:02am 9. 634m INVENTORS HENRY L. THOLSTRUP JOHN A. SKINNER FIG 17 A TORNEY Nov. 11, 1958 H. THOESTRUP ETAL 2,859,351

SHIFT FUNCTIONS CIRCUITS Filed April 30, 1956 22 Sheets-Sheet 11 BUCK K8 CRiA CONTACT\ CONTACT 'g CONTACT Nov. 11, 1958 H. THOLSTRUPWETAL 5 SHIFT FUNCTIONS cmcurrs Filed April 30, I956 22 SheetsSheet 12 READER PIN CONTACTS Nov. 11, 1958 H. THOLSTRUP ET AL 2,359,851

SHIFT FUNCTIONS CIRCUITS 22 Sheets-Sheet 13 Filed April 50 Nov. 11, 1958 H. L. THOLSTRUP ET AL SHIFT FUNCTIONS CIRCUITS 22 Sheets-Sheet 14 Filed April 30, 1956 All Cll

AIZ

FIG. 18d

Nov. 11, 1958 Filed April 50, l956 22 Sheets-Sheet 15 FlG.18e

Nov. 11, 1958 H. L. THOLSTRUPV ETAL 2,859,851

SHIFT FUNCTIONS CIRCUITS V RUN STE Filed April 30, 1956 22 Sheets-Sheet l6 Nov. 11, 1958 H. 1. THOLSTRUP ETAL 2,859,851

SHIFT FUNCTIONS CIRCUITS Filed April 30, 1956 22 Sheets-Sheet 17 m3 F|G 18g 08 RUN STOP

TAB (PC) 298 SHIFT TOGGLE Nov. 11, 1958 H. THOLSTRUP ET AL 2,859,851

SHIFT FUNCTIONS cmcuns Filed April 30, 1956 22 Sheets-Sheet 18 FIG.I8h

0 BACK SPACE TAB CONTROL MARGIN CONTROL 294 L. C. PULSE U. C. PULSE CONTACT CONTACT RIBBON 300 LIFT Nov. 11, 1958 H. L THOL STRUP EIAL SHIFT FUNCTIONS CIRCUITS I Filed April 30, 1956 22 Sheets-Sheet 19 CLUTCH ANTI -REPEQT CONTACT FIG. 18i 

